Fixed missing class variable declarations

CHANGELOG.md

@@ -6,6 +6,13 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 [Unreleased]
 
+## [deprecated-missing-class-vars]
+
+### Fixed
+- Fixed missing class variable declarations.
+
+[Released]
+
 ## [1.39.0]
 
 ### Added

src/Field.php

@@ -149,6 +149,41 @@ abstract class Field {
      */
     static public $indexing = false;
 
+    /**
+     * Field type.
+     *
+     * @var string
+     */
+    protected $type = '';
+
+    /**
+     * Field wrapper.
+     *
+     * @var array
+     */
+    protected $wrapper = [];
+
+    /**
+     * Registered field as a string for debugging purposes.
+     *
+     * @var string
+     */
+    protected $registered = '';
+
+    /**
+     * Possible parent field object.
+     *
+     * @var mixed
+     */
+    protected $parent;
+
+    /**
+     * Fields variable name.
+     *
+     * @var string
+     */
+    protected $fields_var = '';
+
     /**
      * Constructor.
      *

src/Field/Common/Groupable.php

@@ -14,6 +14,13 @@
  */
 trait Groupable {
 
+    /**
+     * Possible parent object.
+     *
+     * @var mixed
+     */
+    protected $parent;
+
     /**
      * Export current field and sub fields to acf compatible format
      *

src/Field/Flexible/Layout.php

@@ -25,6 +25,13 @@ class Layout implements GroupableInterface {
      */
     use MinMax;
 
+    /**
+     * Field type
+     *
+     * @var string
+     */
+    protected $active;
+
     /**
      * Layout label
      *